Clifford was born on July 9, 1955, in Oliver Springs, Tennessee, to Albert Underwood and Evelyn (Lindsey) Underwood. He was preceded in death by his father, mother, and two sisters - Joyce and Mary.
He served in the Army and loved to attend church, sing gospels, watch and talk about sports, and spend time with family.
He is survived by wife Elaine Underwood, son Bryan Underwood and his wife Natalie, son Justin Underwood and his wife Ashley, grandchildren Jacob, MaKenzie, Bradyn, Isaac, Benjamin, Samantha, Emily, and Logan, and many loving cousins, nieces, and nephews.